add better feed handling

src/pages/api/validate-slugs.ts

@@ -0,0 +1,17 @@
+import type { APIRoute } from "astro";
+import { validateSlugs } from "../../lib/api";
+
+export const POST: APIRoute = async ({ request }) => {
+  try {
+    const { slugs } = await request.json();
+    const validSlugs = await validateSlugs(slugs);
+    
+    return new Response(JSON.stringify({ validSlugs }), {
+      status: 200,
+      headers: { 'Content-Type': 'application/json' }
+    });
+  } catch (error) {
+    console.error('Validation error:', error);
+    return new Response("Validation failed", { status: 500 });
+  }
+};